Agentic Index
Bland AI vs Synthflow (2026)
Bland AI and Synthflow both build phone agents on node based flows, and the split is who owns the models. That verdict is the Agentic Index coverage score, graded from each vendor's own published materials.
Bland runs its own speech, language and voice models on its own infrastructure, so call data does not pass through outside providers, and its per minute rate bundles all three: 14 cents on Start with no platform fee, 12 cents on Build at 299 dollars a month and 11 cents on Scale at 499 dollars, with telephony separate at pass through cost. Synthflow lets the customer choose OpenAI models or its own, and voices such as ElevenLabs, and prices through sales, with enterprise contracts from 30,000 dollars a year. On the grid Synthflow is Full on model choice where Bland is None, and Bland is Full on human oversight where Synthflow is Partial. Choose Bland when calls must stay inside one vendor's stack; choose Synthflow when you want to pick the models.
This comparison is published by Agentic Index, an independent agentic AI vendor research platform. Bland AI and Synthflow are each graded against the same 14 capability Agentic Index taxonomy, from the vendor's own public materials under the Agentic Index verification standard, alongside 955 researched vendors. No vendor pays for placement and no vendor has reviewed this page. How this evidence is graded
Choose Bland AI if
- Call audio and transcripts must stay inside one vendor's models and infrastructure.
- A published per minute rate that already includes the model and speech is how you want to budget.
- Human oversight controls must be documented in full; Bland is Full there and Synthflow Partial.
Choose Synthflow if
- You want to choose the language model and the voice rather than accept the vendor's own.
- Agencies reselling agents need subaccounts, custom domains and rebilling built in.
- A contract scoped with sales on volume, telephony and support suits your procurement.
| Feature | B Bland AI |
S Synthflow |
|---|---|---|
| Action & orchestration | ||
|
Integrations & Tool Calling Ability to connect agents to real systems through native integrations, OAuth-authenticated actions, custom tools, APIs, webhooks, or MCP-compatible tools. |
||
|
Bland AIIntegrations & Tool Calling The v2 Tools API creates tools against built-in integrations including Cal.com, Salesforce and Slack, or against any HTTP endpoint for internal services, invoked automatically mid-call and mid-SMS with the response injected back into the live conversation, with credentials held in a secrets store. Webhook nodes, a custom code node and bring-your-own-Twilio extend it further. Together they reach scheduling, CRM, messaging, telephony and any internal system. Sourcedocs.bland.ai/tutorials/tools/integration-tools.mdread 2026-09-05 |
||
|
SynthflowIntegrations & Tool Calling Custom actions call the customer's APIs during a call, with several chained per turn, real time booking writes to calendars, and integrations cover Salesforce, HubSpot, Zendesk, Freshworks, Stripe, Cal.com, GoHighLevel, Make, Zapier and SIP connections to Five9, Genesys Cloud, RingCentral, Talkdesk and others. SourceSynthflow, docs.synthflow.ai (Custom Actions, Real-Time Booking, Integrations overview)read 2026-09-28 |
||
|
Workflow Orchestration Ability to sequence, branch, retry, route, and combine deterministic workflow nodes with autonomous agent steps. |
||
|
Bland AIWorkflow Orchestration Conversational Pathways are node-and-edge conversation graphs with branching, conditional routing on tool output, variable extraction, inline tool execution on dialogue nodes, a custom JavaScript code node, and Flex Mode letting the agent choose its next node. Pathways carry versions that promote to staging or production, folders, and a generation endpoint that builds a pathway from a prompt. Sourcedocs.bland.ai/tutorials/pathways.mdread 2026-09-05 |
||
|
SynthflowWorkflow Orchestration In a visual flow designer, flows combine conversation, message, branch, jump, custom action, transfer and booking nodes, a multi agent system passes calls between agents, workflows automate steps around calls, and version control governs publishing. SourceSynthflow, docs.synthflow.ai (Flow Designer, Branch Node, Multi-Agent System, Version Control, Workflows)read 2026-09-28 |
||
|
Triggers & Channel Coverage How agents wake up and where they work: schedules, webhooks, message events, CRM events, inbox events, chat, email, voice, and collaboration tools. |
||
|
Bland AITriggers & Channel Coverage Agents take inbound and outbound calls over purchased numbers, SIP trunking with auto-discovery, test calls and number porting, or a bring-your-own Twilio account. Batch outbound campaigns run from a recipient list, and a web voice and chat widget and SMS, RCS and iMessage messaging run the same pathways as voice. Sourcedocs.bland.ai/enterprise-features/sip-integration.mdread 2026-09-05 |
||
|
SynthflowTriggers & Channel Coverage Agents answer inbound calls on Synthflow numbers, forwarded lines or SIP trunks, inbound call webhooks fire at the start of calls, campaigns dial contact lists and can be created, paused and resumed through the API, and agents also run over chat and WhatsApp Business calling. SourceSynthflow, docs.synthflow.ai (Campaigns, Inbound Call Webhooks, Telephony overview, WhatsApp Business Calling)read 2026-09-28 |
||
| Knowledge & context | ||
|
Knowledge Grounding & RAG Ability to ground agent behavior in company data through document ingestion, retrieval, external knowledge APIs, semantic search, or RAG layers. |
||
|
Bland AIKnowledge Grounding & RAG Knowledge bases are built and held by the platform. A customer creates one from an uploaded file, direct text or a website scrape with sitemap URL discovery, then lists, updates and versions it by id, queries it directly through a chat-with-knowledge-base endpoint, and attaches it to pathway nodes by id. The same knowledge base serves every agent it is attached to. Sourcedocs.bland.ai/api-v1/post/knowledge-learn-web.mdread 2026-09-05 |
||
|
SynthflowKnowledge Grounding & RAG Knowledge base sources are PDFs, documents, URLs, website crawls on a sync schedule and imports from connected services, retrieved by semantic search during the conversation (RAG), and knowledge bases and their sources are created, attached and deleted through the API; new knowledge is added as a new source. SourceSynthflow, docs.synthflow.ai (Knowledge Base, Knowledge Bases API)read 2026-09-28 |
||
|
Memory & State Persistence Ability to persist context across a run, conversation, workflow, user, team, or longer-term memory layer. |
||
|
Bland AIMemory & State Persistence A dedicated Memory API keeps contact memory records scoped to a persona or agent number, each holding a summary, structured facts and recent cross-channel messages. Endpoints read the memory context a contact sees at conversation start, retrieve what memory changed during a specific call, merge new facts, enable or disable memory per pathway version, and reset one contact's memory without touching the rest. Memory is kept separate from the call record. Sourcedocs.bland.ai/api-v1/post/memory-contact.mdread 2026-09-05 |
||
|
SynthflowMemory & State Persistence Memory Groups keep summaries of an agent's past interactions with each contact (questions, solutions, preferences) and inject them into each new voice, SMS or WhatsApp conversation keyed on the phone number, with a retention window setting; memory stores are created, attached to agents and have contacts attached or detached through the API. Synthflow does not state the retention window values. SourceSynthflow, docs.synthflow.ai (Memory of Past Calls, Memory Stores API)read 2026-09-28 |
||
| Control & trust | ||
|
Human Oversight & Guardrails Approval steps, consent checkpoints, escalation rules, structured guardrails, policy constraints, and pause/resume controls. |
||
|
Bland AIHuman Oversight & Guardrails Guard Rails are configurable objects with their own create, update and delete endpoints, and they run continuously on every AI response to catch critical failures before they reach the caller. They are backed by blocked-number rules, live listen and stop on an active call, warm and live transfer to a human, and threshold alarms routed to email, phone or a custom tool. Guardrails, warm and live transfers and alarms are sold on the Enterprise tier, and the self-serve plans carry only the pathway-level transfer node. Sourcedocs.bland.ai/tutorials/guard-rails.mdread 2026-09-05 |
||
|
SynthflowHuman Oversight & Guardrails Calls transfer to people by phone number, SIP or dynamic rules, business hours bound when the agent works, and PII redaction limits what is kept. Synthflow does not describe a step that holds an agent action for a person's sign off before it commits. SourceSynthflow, docs.synthflow.ai (Call Transfers, Business Hours, Security and Compliance)read 2026-09-28 |
||
|
Security, Identity & Governance RBAC, SSO, auditability, encryption, least-privilege tool access, compliance posture, and data handling policy. |
||
|
Bland AISecurity, Identity & Governance Bland holds SOC 2 Type I and Type II, is HIPAA-eligible with a signed BAA, and covers GDPR and PCI DSS, with compliance documentation obtainable under NDA on Enterprise. It has announced FedRAMP certification on its own blog, and it publishes a trust and security page, a DPA and a subprocessor list. Customers get SSO, JWT request signing, HMAC webhook validation, organization member permissions, a secrets store and a paginated audit-log endpoint for SIEM export. The identity controls are sold on the Enterprise tier. Sourcebland.ai/trust-securityread 2026-09-05 |
||
|
SynthflowSecurity, Identity & Governance Super Admin, Admin and Member roles separate access, with admins controlling SSO, allowed email domains and two factor authentication, plus PII redaction and a 30 day retention option. Synthflow says it is "certified across SOC 2, HIPAA, PCI DSS, and GDPR" and lists ISO 27001, and the Trust Vault at security.synthflow.ai holds the report types and dates. SourceSynthflow, docs.synthflow.ai (Team members, Security and Compliance) and synthflow.airead 2026-09-28 |
||
|
Observability & Auditability Traces, logs, execution histories, metrics, audit events, and debugging detail for production agent behavior. |
||
|
Bland AIObservability & Auditability An event-stream endpoint returns the sequence of events that occurred during a call, alongside per-execution tool logs with aggregated statistics, call detail with transcripts and corrected transcripts, recordings, citation schemas extracting structured data from transcripts, configurable alarms, and audit logs for SIEM export. Together they let a team reconstruct what the agent did step by step, beyond what a metrics dashboard shows. Sourcedocs.bland.ai/api-v1/get/event-stream.mdread 2026-09-05 |
||
|
SynthflowObservability & Auditability Each call's details show the transcript and metadata, an Actions tab with the steps triggered and their results, and every outbound API request an agent made with request and response and when in the call it fired, alongside status and end call reasons; retention follows the plan and logs export. SourceSynthflow, docs.synthflow.ai (Logs, Export Call Data)read 2026-09-28 |
||
|
Deployment & Data Residency Deployment modes and options, including SaaS, dedicated cloud, VPC, on-prem, hybrid, local runtime, and self-hosting. |
||
|
Bland AIDeployment & Data Residency The Enterprise plan includes on-premises and VPC deployment, data residency and a dedicated orchestration server, and Bland offers self-hosted and on-premises deployment for regulated industries, with region-scoped static IPs for outbound and SIP traffic. These options are sold on the Enterprise tier, not held behind an access program. Sourcebland.ai/pricingread 2026-09-05 |
||
|
SynthflowDeployment & Data Residency A workspace is created on the US cluster (storage and compute in the United States), the EU cluster (all data and processing in the European Union) or the Global cluster (data stored in the EU, live processing in the US or EU), chosen at creation and fixed afterward. Synthflow does not describe an on premises deployment. SourceSynthflow, docs.synthflow.ai (Clusters and Regions)read 2026-09-28 |
||
| Solution readiness | ||
|
Prebuilt Agents, Templates & Packs Ready-made workflows, packaged employees, templates, blueprints, industry solutions, and role-specific agents that reduce time-to-value. |
||
|
Bland AIPrebuilt Agents, Templates & Packs Customers start from pathway templates, clone out-of-box test scenario templates into their own pathway through a dedicated endpoint, and draw on a shipped read-only library of eval agent templates alongside ones their organization saves. Personas are reusable agent identities that attach to any number of phone numbers. All of these can be browsed and cloned. Sourcedocs.bland.ai/tutorials/pathways.mdread 2026-09-05 |
||
|
SynthflowPrebuilt Agents, Templates & Packs The marketplace offers ready made agents, among them a real estate buying appointment scheduler, an insurance customer support agent, a hospitality event demand generator, an insurance claims receptionist, a recruitment appointment reminder and a buyer lead qualifier, free to deploy, and lets builders publish and sell their own templates. SourceSynthflow, synthflow.ai/marketplaceread 2026-09-28 |
||
| Platform extensibility | ||
|
Model Flexibility & Routing Ability to work across multiple foundation models, route tasks to different models, or let buyers bring their own providers and keys. |
||
|
Bland AIModel Flexibility & Routing Bland runs its own full stack, with telephony, speech to text, the language model, text to speech and pathway orchestration all its own, and its per-minute price bundles the language model with no per-token charge. Customers cannot select a model, use a custom model or bring their own. Sourcedocs.bland.ai/welcome-to-bland.mdread 2026-09-05 |
||
|
SynthflowModel Flexibility & Routing The AI Model selector offers OpenAI models (GPT-4o, GPT-4.1, GPT-5, 5.1, 5.2 and 5.4 families) beside Synthflow's own LLMs so each agent matches its latency, cost and quality needs, and voices can come from ElevenLabs. OpenAI is the only third party LLM provider listed, and Synthflow does not describe a bring your own keys option. SourceSynthflow, docs.synthflow.ai (General Configuration, ElevenLabs)read 2026-09-28 |
||
|
APIs, SDKs & MCP Extensibility Composability layer: stable APIs, SDKs, MCP tool consumption/serving, custom tools, and integration into internal systems. |
||
|
Bland AIAPIs, SDKs & MCP Extensibility Developers get a versioned REST API across v1 and v2 covering calls, pathways, knowledge bases, memory, tools, personas, evals, SIP and organizations, plus a command line interface, an interactive dev terminal, a Web Agent SDK with token-based auth, HMAC-signed webhooks and post-call webhooks, and a hosted MCP server with a published tool reference and setup guides for Claude Code, Cursor, Codex and other clients. Sourcedocs.bland.ai/integrations/mcp/overview.mdread 2026-09-05 |
||
|
SynthflowAPIs, SDKs & MCP Extensibility Synthflow's Platform API creates, updates and deletes assistants, places calls and batch campaigns, manages chats, simulation cases and suites, actions, knowledge bases, memory stores, contacts, phone numbers and subaccounts, with webhook logs and analytics export, and a Synthflow MCP server sits beside it. SourceSynthflow, docs.synthflow.ai (Platform API introduction, API reference, Synthflow MCP server)read 2026-09-28 |
||
|
Testing, Debugging & Optimization Testing, debugging, scoring, retries, fallbacks, quality gates, and optimization loops for improving agent workflows before and after deployment. |
||
|
Bland AITesting, Debugging & Optimization Bland ships two test surfaces for customers. Agent Testing runs scenarios with assertions against a pathway or persona and returns assertion results and scores, batch runs, simulation sets reporting pass rates and flakiness, and node failure heatmaps. Evals grades batches of real calls with configurable LLM judges and returns per-judge verdicts and per-call results. Both test the customer's own agent. Sourcedocs.bland.ai/tutorials/scenarios.mdread 2026-09-05 |
||
|
SynthflowTesting, Debugging & Optimization Simulation suites generate test cases from the agent's configuration, behavior and actions, judge each against success criteria (all or any), and are rerun after every update as a regression suite before real customers are reached; custom evaluations score live calls, and simulations run through the API. SourceSynthflow, docs.synthflow.ai (Simulations, Custom Evaluations, Simulations API)read 2026-09-28 |
||
| Specialist automation | ||
|
Browser & Computer Use Browser, desktop, or remote/local computer control for workflows that cannot be handled through stable APIs alone. |
||
|
Bland AIBrowser & Computer Use Agents navigate third party IVR menus that take DTMF input by inferring and playing keypad tones, through a play-keypad-touch-tone system tool and pathway configuration, and they detect and respond to voicemail systems on outbound calls. This is control of a telephone keypad only, and Bland offers no browser, desktop session or remote computer control. Sourcedocs.bland.ai/api-v1/post/calls.mdread 2026-09-05 |
||
|
SynthflowBrowser & Computer Use IVR handling navigates a phone menu by keypad, the only interface the agent operates, and the website and app integration embeds calls in the customer's own product. Synthflow does not describe browser, desktop or computer control. SourceSynthflow, docs.synthflow.ai (IVR Handling, Integrate into Website and Apps)read 2026-09-28 |
||
Pricing snapshot
Sourced from the Index pricing dataset · open each vendor's profile for full detail.
| Pricing | B Bland AI |
S Synthflow |
|---|---|---|
|
Entry price Lowest public entry point |
Start at $0.14 a minute with no platform fee. Build is $299 a month at $0.12 a minute and Scale $499 a month at $0.11 a minute. Enterprise is custom. | Enterprise contracts from $30,000 a year, priced through sales. |
|
Pricing confidence How public the numbers are |
Public, exact | Public, partial |
|
Billing Primary billing axis |
Hybrid. The plan tier sets the per minute rate, and usage is billed per connected minute. | A contract scoped on call volume, concurrency, telephony, integrations and support. |
|
Variable cost Workload / overage exposure |
High variable cost | High variable cost |
|
Free tier / trial Try before you buy |
Free tierTrial
|
No free tier
|
|
Buying motion Self-serve vs sales call |
Mixed | Sales call |
More comparisons with Bland AI or Synthflow
Other matchups in voice agents
Not the pairing you were after? These compare a different set of voice agents on the same 14 capabilities.